发明名称 Övergång mellan symmetrisk och asymmetrisk stripline i ett flerlagers mönsterkort
摘要 The present invention relates to an arrangement in multilayer printed circuit boards, with the aim of improving matching in transitions between symmetric striplines (3) and asymmetric striplines (4). The requirement of a coverpad (6) for contact between the via (5) and the asymmetric stripline (4) for dimension reasons among other things, results in matching problems. In order to avoid this problem, the earth plane (7, 10) nearest the transition is moved away in the proximity of the via (5).
申请公布号 SE514424(C2) 申请公布日期 2001.02.19
申请号 SE19990002302 申请日期 1999.06.17
申请人 TELEFONAKTIEBOLAGET L M ERICSSON 发明人 BJOERN *ALBINSSON;THOMAS *HARJU
分类号 H05K3/46;H01P1/04;H01P5/08;H05K1/00;H05K1/02;(IPC1-7):H05K1/00 主分类号 H05K3/46
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